Ice-cream freezer



June 16, 1925.

M. A. ROLLMAN 1cm (:REAMFREEZER Filed 001:. 6, 1922 2 Slieets-Sheet 1 June 16, 1925. 1,542,323

M. A. ROLLMAN ICE CREAM FREEZER Filed 001'.- 6, 1922 2 Sheets-Sheet 2 inventor lumap Patented June 16; 1925.

Mop N-T JOY, TERNS LVA IA.

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Show de ed lin s in Fig-I i wey, l yif pab d fh lef b f e th [dis jting thed gmjdial hm- S130 to any apprelq a l'e xte "Th ce si d 'p n i lfifim y b .stempledr durin .01 6 f th i s z ngqpera 'on t -lie a s p ra ope io ffi th ol s ar f This, shield 31 is held dtwn in 'plaee by haviI Lg' its'free eiid 33 engaged under the hub the end pfithelpept 33 being rounded so lajs' ttolfitfni'qelfy against the annular surface ."gfthe'h ib. Thi shieild 31 is constituted pf epit e L u ut-Wh n the ll ':wii i b u,nde ood t t w en t eb g hole is formed for the depending hub 29 of the gear 25. After the gear 25 is dropped into place, this shield 31 is bent down into position and its free end 33 is snapped under the hub 24, thus not only properly positioning the shield for the reception of the upper end of the dasher-shaft, but also, confining the wheel 25 in place. This is a very simple and inexpensive way of making and assembling these parts, it being the main object of this invention to so simplify the parts and the manner of manufacturing the same that the freezer may be marketed at an extremely low price.

The nut 28 is provided with a central round hole for the passage of the dashershaft. This nut is formed in a special manner with a View of obtaining lightness in weight and reducing the expense of manufacture to a. minimum. It consists of a sheet-metal thimble closed at its top and having an external annular head 34 (Fig. 11) formed 011 it at a distance from its open end, and an additional internal annular bead 35 formed nearer to its open end. The open end of the thimble is inserted down through the hole in the can-top until the edge thereof engages in the bead 35; then, by a pressing operation accomplished by a special tool, the bead 34 is compressed to form a closed flange clamping against the top side of the cover, and the depending edge of the thimble is flared outwardly and clamped against the under face of the cover, thereby forming a rigid connection between the thimble and the cover by a single operation of the tool and without brazing or soldering.

The dasher-bearing 36 in the bottom of the cream-can is formed and affixed to the bottom in substantially the same manner; that is to say, the beaded upper open end of the thimble is inseited up through the bottom of the can and then, by a pressing action, the open sheet-metal end of the thimble is crushed down upon the upper surface of the can-bottom to thereby solidly clamp the bearing-thimble to the can-bottom insuch manner as to avoid the necessity of brazing or soldering.

As shown especially in Figs. 4 and 5, the can-top is locked to the cream-can by having two depressions 37 formed in its side flanges at opposite points, in position to engage depressions 38 formed in the rim-bead of the cream-can. In this way, I provide in a simple way for locking the top of the creamcan cover to the cream-can so as to enable the cream-can to be rotated through the medium of the cover.

The cream-can bottom 39 is affixed to the cream-can in a special manner. I first form an inwardly-extending annular open fold 40 in the can body at a distance from its bottom end. I then'slip into the bottom end of the can, until it comes against said annular fold 40, the circular bottom-plate 39, this plate being formed with an annular flange 41 which fits within the body of the can below the bead 40 and terminates short of'the bottom edge of the canithen, by a suitable press, curl the bottom edge of the can-body and the flange 41 inwardly and close the fold 40, all the parts being forced tightly together and the free edge of the can-body being curled upwardly against the bottom face of the can-bottom 39. In this way, I form a very rigid bead on the bottom of the can and make a water-tight joint, and at the same time I avoid forming any exterior bead on the can, this latter being an advantage in nesting the cans for shipment. The bottom edge of the ice bucket, which edge is notshown in my drawing, may be formed in the same manner.

I claim:

1. In an ice cream freezer, a sheet-metal bucket having horizontal slots cut in it underneath its bead, the metal of the bucket below said slots be'ing'pressed inwardly to form upwardly-facing holes and supporting lugs, and a gearing-bridge having lugs which extend through said slots and rest on said supporting lugs. 1

2;In an ice cream freezer, a bridge, a driven gear resting thereon, a driving shaft carrying a driving gear meshing with said driven gear and provided with an annular hub, and a guard or shield for holding the driven gear in place carriedby the bridge and extending over the driven gear and engaging under theannular face of said hub.

3. The structure recited inclaim 2, said guard or shield being formed integral with the bridge and being provided with an angular hole for the reception of the dashershaft and having resilient engagement with said hub.

l. In an ice cream freezer, a drivingshaft carrying a driving-gear, a bridge supporting said driving-shaft, and a driven gear supported on the bridge and having an angular hole for engagement with the rotary element of the freezer, said driven gear consisting of a disk of sheet metal resting fiatwise'on the bridge and having its central portion dished downwardly to engage said rotary element. 5. An ice cream freezer in which the driven member of the gearing is provided with an angular opening for engaging a nut on the cream-can top, said nut being provided with a central hole for the passage of the dasher-shaft and being constructed of a sheet-metal thimble having its depending open end clamped in a hole in the can-top. 6. In an ice cream freezer, a cream-can top nut consisting of a hollow thimble having a central hole in its top for the passage of the dasher-shaft and having its lower H open end annularly folded and clamped cream-can and having its upper open end around the edge of the hole in the can-top folded down on the inside of the bottom to thus rigidly anchor the thimble to the to thus rigidly connect the bearingthimble 10 ea n-top. of the can-bottom.

5 7. A dasher-bearing for a cream-can coni In testimony whereof I hereunto affix my sisting of a closed-ended thimble inserted signature. up through a hole in'the bottom of the MICHAEL A. ROLLMAN. 

